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This commit is contained in:
Asaki Yuki 2026-01-18 21:51:52 +07:00
parent 6358580eee
commit 6b93909e7e
5 changed files with 114 additions and 9 deletions
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81
src/native/main.cpp
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@ -1,4 +1,5 @@
#include <napi.h>
#include <format>
#include <regex>
enum TokenKind {
@ -31,7 +32,7 @@ namespace Lexer {
return std::regex_match(std::string(1, c), pattern);
}
Napi::Object makeToken(Napi::Env &env, const std::string &input, TokenKind kind, size_t start, size_t length) {
Napi::Object makeToken(Napi::Env &env, const std::string &input, TokenKind kind, size_t start, size_t length = 1) {
Napi::Object token = Napi::Object::New(env);
token.Set(Napi::String::New(env, "start"), Napi::Number::New(env, start));
@ -71,8 +72,71 @@ namespace Lexer {
char c = input[index];
switch (c) {
// Literals
case '#':
case '$': {
const size_t start = index++;
while (index < length) {
const char c = input[index];
if (Lexer::isWordChar(c)) index++;
else break;
}
tokens.push_back(makeToken(env, input, TokenKind::VARIABLE, start, index-- - start));
break;
} break;
case '\'': {
const size_t start = index++;
while (index < length) {
const char c = input[index];
if (c == '\'') break;
index++;
}
tokens.push_back(makeToken(env, input, TokenKind::STRING, start, index - start + 1));
} break;
case ',':
tokens.push_back(makeToken(env, input, TokenKind::COMMA, index));
break;
// Single operators
case '+':
case '-':
case '*':
case '/':
case '%':
tokens.push_back(makeToken(env, input, TokenKind::OPERATOR, index));
break;
case '(':
tokens.push_back(makeToken(env, input, TokenKind::OPEN_PARENTHESIS, index));
break;
case ')':
tokens.push_back(makeToken(env, input, TokenKind::CLOSE_PARENTHESIS, index));
break;
// Double operators
case '&':
case '|':
case '=':
if (input[index + 1] == input[index]) tokens.push_back(makeToken(env, input, TokenKind::OPERATOR, index++, 2));
else tokens.push_back(makeToken(env, input, TokenKind::OPERATOR, index));
break;
case '!':
case '>':
case '<':
if (input[index + 1] == '=') tokens.push_back(makeToken(env, input, TokenKind::OPERATOR, index++, 2));
else tokens.push_back(makeToken(env, input, TokenKind::OPERATOR, index));
break;
default: {
size_t start = index;
const size_t start = index;
if (Lexer::isNumberChar(c)) {
while (Lexer::isNumberChar(input[index + 1])) index++;
@ -85,9 +149,17 @@ namespace Lexer {
Lexer::makeToken(env, input, TokenKind::WORD, start, index - start + 1)
);
} else if (!Lexer::isBlankChar(c)) {
std::string message = std::format(
"\x1b[31m{}>>>{}<<<{}\nInvalid character\x1b[0m",
input.substr(0, start),
input.substr(start, index - start + 1),
input.substr(index + 1)
);
Napi::TypeError::New(env, Napi::String::New(env, message)).ThrowAsJavaScriptException();
return Napi::Array::New(env, 0);
}
}
} break;
};
index++;
@ -96,9 +168,8 @@ namespace Lexer {
size_t tokenLength = tokens.size();
Napi::Array result = Napi::Array::New(env, tokenLength);
for (size_t i = 0; i < tokenLength; i++) {
for (size_t i = 0; i < tokenLength; i++)
result.Set(i, tokens[i]);
}
return result;
}